Valve.



W. VOLKHARDT.

VALVE.

APPLIOATION FILED JULY 1, 190a.

Patented Mar. 1, 1910.

WILLIAM VOLKHABDT, 0F STAPLETON, NEW YORK.

VALVE.

Specification of Letters Patent.

Application filed July 1,1908.

Patented Mar. 1, 1910.

Serial No. 441,350.

To all whom it may concern:

Be it known that I, WILLIAM VOLKHARDT, a citizen of the United States,residing at Stapleton, in the county of Richmond and State of New York,have invented a new and useful Valve, of which the following is aspecification.

This invention relates to valves of that type in which liquid passesfrom an inlet pipe to a delivery pipe through a valve plug attached tosaid delivery pipe, the latter pipe being in concentric relation to theaxis of rotation of said plug.

The object of the invention is to provide a simple valve of this classwhich when opened admits water freely to the valve plug and thence tothe delivery pipe, and when closed will drain all water from thedelivery pipe whether the valve be turned to the right or left. Theconstruction is such that the inflow of water must be wholly cut offbefore the delivery pipe can be drained.

To more clearly understand the construction and arrangement of theinvention, attention is directed to the following detailed descriptionand claim, and the accompanying drawing forming a part of thisspecification, in which Figure 1 is an exterior view of the valve; Fig.2 a vertical sectional view of the same, and Fig. 3 a cross sectionalview on the line 33 of Fig. 1.

Like reference characters are used for the same parts in all thefigures.

In the drawing, 1 indicates a valve casing of usual form with a neck 2projecting from one side thereof in which the inlet pipe 3 is adapted tobe screwed. The top of the easing 1 is flat with the exception of twoupwardly projecting lugs 4 and 5 each with a straight vertical side atan angle of ninety degrees to each other.

Through the axis of the valve casing 1 and from end to end thereof, is atapered hole forming a seat for a valve plug 6 ground to fit said seatand held in place therein against endwise movement by the usual washer 7and nut 8 secured to a threaded stem 9 on the lower and smaller end ofthe valve plug 6. The valve plug 6 is hollow from a point below theinlet opening 10 in the casing to and through the upper end of the valveplug which latter extends above the casing 1 and terminates in the usualexterior polygonal collar 11. An interior thread 12 extends a shortdistance within the opening 13 in the valve plug into which is screwedthe lower end of the delivery pipe 14; prolonged upwardly in the axialline of the valve plug 6.

Through the wall of the valve plug 6 is made an opening 15, elongated inthe direction of the length of the plug and somewhat narrowtransversely. Through this opening fluid enters the valve, when the plugis turned to bring the openings 10 and 15 into coincidence, and passesup the delivery pipe 14.

When the valve is used as a hydrant valve, it is placed below groundsufficiently far to prevent water therein from freezing. The outlet ordelivery pipe extends above the surface of the ground and any watertherein, during cold weather, is liable to freeze, thus stopping theflow of water and probably bursting the pipe- To prevent these accidentsmany ways have been devised to drain the delivery pipe as soon as theflow of water therethrough has been stopped, but as far as known, theseprevious devices have been provided with limiting means for preventingthe plug being turned too far and thus defeat the object for which theywere designed. In the present structure although a limiting means 1sshown for convenience, this may be omitted and the delivery pipe will bedrained in whatever position the valve plug may be turned, either toright or left, as soon as it has cut off the inflow of water from theinlet pipe. In fact, at no point in an entire rotation of the valve plugis there any possi bility of communication between the inlet opening 10and the waste outlet.

On each side of the valve casing 1 as in Figs. 1 and 3, or on the sideopposite the inlet neck 2 as in Fig. 2 is a draining opening 16 each ina plane passing through the inlet opening 15 in the valve plug: Thesedraining openings pass through the valve casing and are each surroundedby a short hollow stem 17, preferably threaded interiorly for a drainpipe 18. The drain openings 16 on each side of the casing are connectedby a channel 19 formed in the inner side of the valve plug seat oppositethe inlet opening 10 therein. A similar channel 19 extends one half wayaround the valve seat in a similar position when only a single outlet 16is used, as in Fig. 2. The widths of the water inlets 10 and 15 are afraction less than the width of channel wall between said inlet 10 andthe beginning of the channel 19 on either side so that before the inletopening 15 in the valve plug can connect with the channel 19, it hasclosed the inlet opening 10 in the casing. As soon, therefore, as thevalve plug has made a quarter turn the opening 15 in the valve plug isin full communication with the channel 19 and all water in the deliverypipe passes out through both drain openings 16 by way of the channel,or, where but one drain opening is used, the water will travel along thechannel and out through said single drain opening. It will thus be seenthat if the valve plug be placed in any position between one quarter andthree quarters of arevolution, no impediment is offered to the rapid andcomplete emptying of the delivery pipe. \Vhen the valve plug has beenturned to the three quarter posit-ion, instead of reversing the movementto open the valve, the valve plug may be turned from its threequarterposition to the full open position by moving it through the lastquarter, the drain opening being cut oif, as heretofore described beforethe edges of the two inlet openings 10 and 15 pass each other.

When it is desired to limit the rotation of the valve plug 6 to onequarter of a turn, a stop pin 20 is screwed into the hole 21 in thevalve plug above the casing 1 to positively limit the movement of saidplug in either direction through striking the lugs at and By thisarrangement the valve is opened when the plug is turned to the right,

this movement causing the pin to niove togroove extending from a pointadjacent to one side of the inlet port, and around to a point adjacentto the opposite side of said inlet port, the respective ends of thegroove being spaced equidistant from the inlet port, and a hollowturning plug working in the casing, and having an inlet opening in theplane of the inlet port, the width of said inlet opening being afraction less than the distance between the inlet port. and either endof the aforesaid groove.

In testimony that I claim the foregoing as my own, I have hereto atlixedmy signature in the presence of two witnesses.

\VILLIAM VOLKHA R I)'[.

Vitnesses Joi-m B. CORNELL, D. T. CORNELL.

